Name: directed differentiation of primitive and definitive hematopoietic progenitors from human pluripotent stem cells
Uploaded: 2017-11-01T12:30:00
Description: Watch this Scientific Journal Video about Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells at JoVE.com

Ce travail a été soutenu par le Department of Internal Medicine, Division d’hématologie, Washington University School of Medicine. CD a été pris en charge par T32HL007088 du National Heart, Lung, and Blood Institute. CMS a été pris en charge par une société américaine d’hématologie Scholar Award.

1. réactifs <ol><li>obtenir cell lines ; CSEh ou hiPSCs 1, souris fibroblastes embryonnaires (MEFs) 29, OP9-DL4 stroma 30 , 31.</li> <li>préparation du réactif <ol><li>préparer une solution à 0,1 % p/v de la gélatine dans du PBS. Stériliser à l’autoclave et conserver à 4 ° C après aliquotage.
		<ol><li>Prepare les ustensiles en plastique enduit de gélatine. Manteau 6 paraboloï...

<ol>
	<li>Thomson, J. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Embryonic+stem+cell+lines+derived+from+human+blastocysts.">Embryonic stem cell lines derived from human blastocysts.</a> Science. 282 (5391), 1145-1147 (1998).</li><li>Murry, C. E., Keller, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Differentiation+of+embryonic+stem+cells+to+clinically+relevant+populations:+lessons+from+embryonic+development.">Differentiation of embryonic stem cells to clinically relevant populations: lessons from embryonic development.</a> Cell. 132 (4), 661-680 (2008).</li><li>Ditadi, A., Sturgeon, C. M., Keller, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+view+of+human+haematopoietic+development+from+the+Petri+dish.">A view of human haematopoietic development from the Petri dish.</a> Nat Rev Mol Cell Biol. 18 (1), 56-67 (2017).</li><li>Chen, M. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Erythroid/myeloid+progenitors+and+hematopoietic+stem+cells+originate+from+distinct+populations+of+endothelial+cells.">Erythroid/myeloid progenitors and hematopoietic stem cells originate from distinct populations of endothelial cells.</a> Cell Stem Cell. 9 (6), 541-552 (2011).</li><li>McGrath, K. E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Distinct+Sources+of+Hematopoietic+Progenitors+Emerge+before+HSCs+and+Provide+Functional+Blood+Cells+in+the+Mammalian+Embryo.">Distinct Sources of Hematopoietic Progenitors Emerge before HSCs and Provide Functional Blood Cells in the Mammalian Embryo.</a> Cell Rep. 11 (12), 1892-1904 (2015).</li><li>McGrath, K. E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+transient+definitive+erythroid+lineage+with+unique+regulation+of+the+beta-globin+locus+in+the+mammalian+embryo.">A transient definitive erythroid lineage with unique regulation of the beta-globin locus in the mammalian embryo.</a> Blood. 117 (17), 4600-4608 (2011).</li><li>Palis, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Spatial+and+temporal+emergence+of+high+proliferative+potential+hematopoietic+precursors+during+murine+embryogenesis.">Spatial and temporal emergence of high proliferative potential hematopoietic precursors during murine embryogenesis.</a> Proc Natl Acad Sci U S A. 98 (8), 4528-4533 (2001).</li><li>Palis, J., Robertson, S., Kennedy, M., Wall, C., Keller, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Development+of+erythroid+and+myeloid+progenitors+in+the+yolk+sac+and+embryo+proper+of+the+mouse.">Development of erythroid and myeloid progenitors in the yolk sac and embryo proper of the mouse.</a> Development. 126 (22), 5073-5084 (1999).</li><li>Boiers, C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Lymphomyeloid+contribution+of+an+immune-restricted+progenitor+emerging+prior+to+definitive+hematopoietic+stem+cells.">Lymphomyeloid contribution of an immune-restricted progenitor emerging prior to definitive hematopoietic stem cells.</a> Cell Stem Cell. 13 (5), 535-548 (2013).</li><li>Bertrand, J. Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Haematopoietic+stem+cells+derive+directly+from+aortic+endothelium+during+development.">Haematopoietic stem cells derive directly from aortic endothelium during development.</a> Nature. 464 (7285), 108-111 (2010).</li><li>Hadland, B. K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+requirement+for+Notch1+distinguishes+2+phases+of+definitive+hematopoiesis+during+development.">A requirement for Notch1 distinguishes 2 phases of definitive hematopoiesis during development.</a> Blood. 104 (10), 3097-3105 (2004).</li><li>Kumano, K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Notch1+but+not+Notch2+is+essential+for+generating+hematopoietic+stem+cells+from+endothelial+cells.">Notch1 but not Notch2 is essential for generating hematopoietic stem cells from endothelial cells.</a> Immunity. 18 (5), 699-711 (2003).</li><li>Medvinsky, A., Rybtsov, S., Taoudi, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Embryonic+origin+of+the+adult+hematopoietic+system:+advances+and+questions.">Embryonic origin of the adult hematopoietic system: advances and questions.</a> Development. 138 (6), 1017-1031 (2011).</li><li>Robert-Moreno, A., Espinosa, L., de la Pompa, J. L., Bigas, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=RBPjkappa-dependent+Notch+function+regulates+Gata2+and+is+essential+for+the+formation+of+intra-embryonic+hematopoietic+cells.">RBPjkappa-dependent Notch function regulates Gata2 and is essential for the formation of intra-embryonic hematopoietic cells.</a> Development. 132 (5), 1117-1126 (2005).</li><li>Chadwick, K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cytokines+and+BMP-4+promote+hematopoietic+differentiation+of+human+embryonic+stem+cells.">Cytokines and BMP-4 promote hematopoietic differentiation of human embryonic stem cells.</a> Blood. 102 (3), 906-915 (2003).</li><li>Davis, R. P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Targeting+a+GFP+reporter+gene+to+the+MIXL1+locus+of+human+embryonic+stem+cells+identifies+human+primitive+streak-like+cells+and+enables+isolation+of+primitive+hematopoietic+precursors.">Targeting a GFP reporter gene to the MIXL1 locus of human embryonic stem cells identifies human primitive streak-like cells and enables isolation of primitive hematopoietic precursors.</a> Blood. 111 (4), 1876-1884 (2008).</li><li>Kaufman, D. S., Hanson, E. T., Lewis, R. L., Auerbach, R., Thomson, J. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hematopoietic+colony-forming+cells+derived+from+human+embryonic+stem+cells.">Hematopoietic colony-forming cells derived from human embryonic stem cells.</a> Proc Natl Acad Sci U S A. 98 (19), 10716-10721 (2001).</li><li>Kennedy, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=T+lymphocyte+potential+marks+the+emergence+of+definitive+hematopoietic+progenitors+in+human+pluripotent+stem+cell+differentiation+cultures.">T lymphocyte potential marks the emergence of definitive hematopoietic progenitors in human pluripotent stem cell differentiation cultures.</a> Cell Rep. 2 (6), 1722-1735 (2012).</li><li>Ledran, M. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Efficient+hematopoietic+differentiation+of+human+embryonic+stem+cells+on+stromal+cells+derived+from+hematopoietic+niches.">Efficient hematopoietic differentiation of human embryonic stem cells on stromal cells derived from hematopoietic niches.</a> Cell Stem Cell. 3 (1), 85-98 (2008).</li><li>Ng, E. S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+primitive+streak+gene+Mixl1+is+required+for+efficient+haematopoiesis+and+BMP4-induced+ventral+mesoderm+patterning+in+differentiating+ES+cells.">The primitive streak gene Mixl1 is required for efficient haematopoiesis and BMP4-induced ventral mesoderm patterning in differentiating ES cells.</a> Development. 132 (5), 873-884 (2005).</li><li>Pick, M., Azzola, L., Mossman, A., Stanley, E. G., Elefanty, A. G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Differentiation+of+human+embryonic+stem+cells+in+serum-free+medium+reveals+distinct+roles+for+bone+morphogenetic+protein+4,+vascular+endothelial+growth+factor,+stem+cell+factor,+and+fibroblast+growth+factor+2+in+hematopoiesis.">Differentiation of human embryonic stem cells in serum-free medium reveals distinct roles for bone morphogenetic protein 4, vascular endothelial growth factor, stem cell factor, and fibroblast growth factor 2 in hematopoiesis.</a> Stem Cells. 25 (9), 2206-2214 (2007).</li><li>Vodyanik, M. A., Bork, J. A., Thomson, J. A., Slukvin, I. I. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+embryonic+stem+cell-derived+CD34++cells:+efficient+production+in+the+coculture+with+OP9+stromal+cells+and+analysis+of+lymphohematopoietic+potential.">Human embryonic stem cell-derived CD34+ cells: efficient production in the coculture with OP9 stromal cells and analysis of lymphohematopoietic potential.</a> Blood. 105 (2), 617-626 (2005).</li><li>Vodyanik, M. A., Thomson, J. A., Slukvin, I. I. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Leukosialin+(CD43)+defines+hematopoietic+progenitors+in+human+embryonic+stem+cell+differentiation+cultures.">Leukosialin (CD43) defines hematopoietic progenitors in human embryonic stem cell differentiation cultures.</a> Blood. 108 (6), 2095-2105 (2006).</li><li>Yu, C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Retinoic+acid+enhances+the+generation+of+hematopoietic+progenitors+from+human+embryonic+stem+cell-derived+hemato-vascular+precursors.">Retinoic acid enhances the generation of hematopoietic progenitors from human embryonic stem cell-derived hemato-vascular precursors.</a> Blood. 116 (23), 4786-4794 (2010).</li><li>Zambidis, E. T., Peault, B., Park, T. S., Bunz, F., Civin, C. I. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hematopoietic+differentiation+of+human+embryonic+stem+cells+progresses+through+sequential+hematoendothelial,+primitive,+and+definitive+stages+resembling+human+yolk+sac+development.">Hematopoietic differentiation of human embryonic stem cells progresses through sequential hematoendothelial, primitive, and definitive stages resembling human yolk sac development.</a> Blood. 106 (3), 860-870 (2005).</li><li>Sturgeon, C. M., Ditadi, A., Awong, G., Kennedy, M., Keller, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Wnt+Signaling+Controls+the+Specification+of+Definitive+and+Primitive+Hematopoiesis+From+Human+Pluripotent+Stem+Cells.">Wnt Signaling Controls the Specification of Definitive and Primitive Hematopoiesis From Human Pluripotent Stem Cells.</a> Nat Biotechnol. 32 (6), 554-561 (2014).</li><li>Choi, K. D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Identification+of+the+hemogenic+endothelial+progenitor+and+its+direct+precursor+in+human+pluripotent+stem+cell+differentiation+cultures.">Identification of the hemogenic endothelial progenitor and its direct precursor in human pluripotent stem cell differentiation cultures.</a> Cell Rep. 2 (3), 553-567 (2012).</li><li>Ditadi, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+Definitive+Haemogenic+Endothelium+and+Arterial+Vascular+Endothelium+Represent+Distinct+Lineages.">Human Definitive Haemogenic Endothelium and Arterial Vascular Endothelium Represent Distinct Lineages.</a> Nat Cell Biol. 17 (5), 580-591 (2015).</li><li>Conner, D. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mouse+embryo+fibroblast+(MEF)+feeder+cell+preparation.">Mouse embryo fibroblast (MEF) feeder cell preparation.</a> Curr Protoc Mol Biol. Chapter 23, (2001).</li><li>La Motte-Mohs, R. N., Herer, E., Zuniga-Pflucker, J. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Induction+of+T-cell+development+from+human+cord+blood+hematopoietic+stem+cells+by+Delta-like+1+in+vitro.">Induction of T-cell development from human cord blood hematopoietic stem cells by Delta-like 1 in vitro.</a> Blood. 105 (4), 1431-1439 (2005).</li><li>Schmitt, T. M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Induction+of+T+cell+development+and+establishment+of+T+cell+competence+from+embryonic+stem+cells+differentiated+in+vitro.">Induction of T cell development and establishment of T cell competence from embryonic stem cells differentiated in vitro.</a> Nat Immunol. 5 (4), 410-417 (2004).</li><li>Holmes, R., Zuniga-Pflucker, J. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+OP9-DL1+system:+generation+of+T-lymphocytes+from+embryonic+or+hematopoietic+stem+cells+in+vitro.">The OP9-DL1 system: generation of T-lymphocytes from embryonic or hematopoietic stem cells in vitro.</a> Cold Spring Harb Protoc. 2009 (2), (2009).</li><li>Polychronopoulos, P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Structural+basis+for+the+synthesis+of+indirubins+as+potent+and+selective+inhibitors+of+glycogen+synthase+kinase-3+and+cyclin-dependent+kinases.">Structural basis for the synthesis of indirubins as potent and selective inhibitors of glycogen synthase kinase-3 and cyclin-dependent kinases.</a> J Med Chem. 47 (4), 935-946 (2004).</li><li>Chen, B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Small+molecule-mediated+disruption+of+Wnt-dependent+signaling+in+tissue+regeneration+and+cancer.">Small molecule-mediated disruption of Wnt-dependent signaling in tissue regeneration and cancer.</a> Nat Chem Biol. 5 (2), 100-107 (2009).</li><li>Sugimura, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Haematopoietic+stem+and+progenitor+cells+from+human+pluripotent+stem+cells.">Haematopoietic stem and progenitor cells from human pluripotent stem cells.</a> Nature. , (2017).</li><li>Ohgushi, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Molecular+pathway+and+cell+state+responsible+for+dissociation-induced+apoptosis+in+human+pluripotent+stem+cells.">Molecular pathway and cell state responsible for dissociation-induced apoptosis in human pluripotent stem cells.</a> Cell Stem Cell. 7 (2), 225-239 (2010).</li><li>Peschle, C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Embryonic----Fetal+Hb+switch+in+humans:+studies+on+erythroid+bursts+generated+by+embryonic+progenitors+from+yolk+sac+and+liver.">Embryonic----Fetal Hb switch in humans: studies on erythroid bursts generated by embryonic progenitors from yolk sac and liver.</a> Proc Natl Acad Sci U S A. 81 (8), 2416-2420 (1984).</li></ol>

Ce protocole décrit une méthode rapide, sans sérum, exempt de stroma de la différenciation des progéniteurs hématopoïétiques primitives ou définitifs. Mésodermiques spécification des progéniteurs hématopoïétiques primitives ou définitifs peut être réalisée de façon fiable utilisant notre protocole, qui exploite uniquement des petites molécules inhibitrices de la signalisation WNT canonique. Activation de WNT spécifiques au stade de l’inhibiteur de la GSK3β CHIR9902133 donn...

Les cellules souches pluripotentes humaines (hPSCs) sont définis comme englobant les cellules souches embryonnaires humaines (CSEh) et les cellules souches humaines pluripotentes induites (hiPSCs) et ont la capacité unique non seulement en cours de renouvellement automatique dans des conditions appropriées de croissance, mais aussi, la capacité à se différencier en tous types de cellules dérivées des trois couches de germe : ectoderme, mésoderme et endoderme1. En raison de ces capacités uniques, hPSCs sont très prometteurs pour la médecine régénérative, modélisation de maladies et thérapies à base cellulaire2. Alors que plusieurs types de cellules ont été différenciés avec succès de hPSCs, un défi important est la spécification in vitro d’exclusivement adulte comme dérivé de hPSC les cellules souches hématopoïétiques (CSH) et des progéniteurs hématopoïétiques définitifs.
Une barrière susceptible au développement du CSH humaine de hPSCs est la présence de multiples programmes hématopoïétiques dans l' embryon humain3. Le premier programme qui émerge, appelé « hématopoïèse primitif », prend sa source dans les tissus extra-embryonnaires sac vitellin et est mieux caractérisé par sa production transitoire des progéniteurs des érythroblastes (EryP-CFC), les macrophages et les mégacaryocytes. Notamment, ce programme ne donne pas lieu à CSH, ni il donne naissance à des progéniteurs lymphoïdes T et B. Toutefois, le sac vitellin transitoirement suscite restreints progéniteurs hématopoïétiques définitifs, tels que le progéniteur myéloïde érythro (EMP4,5,6,7,8) et le déficient érythroïdes lymphoïdes-amorcé multipotentes progéniteurs (PPSP9). Cependant, PGE ni LMPPs sont entièrement multipotentes, ou capable de prise de greffe de CSH-comme chez les receveurs adultes. En revanche, plus tard dans le développement, le programme hématopoïétique « définitif » classiquement définie est spécifié dans la région de l’aorte-gonades-celles de l’embryon proprement dit, donnant lieu à toutes les lignées hématopoïétiques adultes, y compris le HSC. La spécification de ces cellules hématopoïétiques définitifs intra embryonnaires se produit de manière Notch-dépendante, via une transition endothéliales-à-hématopoïétiques du hemogenic l’endothélium (il)3,10,11 ,12,13,14. En dehors de la capacité de reconstitution, le potentiel de multilineage et Notch-dépendance à l’égard de ces cellules peuvent être utilisé pour distinguer ces progéniteurs hématopoïétiques définitifs de l’EMP et le PPSP (révisé dans les références3,13 ).
Comprendre les mécanismes qui régissent la spécification hématopoïétique primitive et définitive de hPSCs est probablement essentiel à la production reproductible de progéniteurs hématopoïétiques définitifs dans un éventail de lignes hPSC. Jusqu'à tout récemment, des protocoles de différenciation hPSC qui pourraient séparer multipotentes progéniteurs hématopoïétiques primitives et définitives n’existaient pas de15,16,17,18, 19,20,21,22,23,24,25. Beaucoup d’approches à l’aide de sérum fœtal (SVF) et/ou stromal co-culture tout d’abord souligné le potentiel hématopoïétique de différenciation hPSC, avec des mélanges de primitives et définitive hématopoïétiques potentiel15,16, 17,19,22,23,25. En outre, de nombreux protocoles sans sérum hématopoïétiques ont décrit les exigences en matière de signal pour la spécification du mésoderme de hPSCs qui abrite hématopoïétiques potentiels18,20,21, 24. Cependant, comme ces méthodes ont toujours donné lieu à des mélanges hétérogènes des deux programmes, leur utilisation dans des applications cliniques et de la compréhension des mécanismes du développement peut être limitée.
Nous avons récemment construit sur ces études, alors que nous avons décrit les exigences spécifiques au stade signal ACTIVIN/NODAL et signalisation WNT dans spécification hématopoïétique primitive et définitive du mésoderme dérivé hPSC18,26 . Ce dernier était particulièrement unique, car son utilisation de la manipulation de signaux spécifiques au stade WNT permet la spécification d’exclusive primitive ou exclusivement des progéniteurs hématopoïétiques définitif26. Au cours de la spécification du mésoderme, l’inhibition de la signalisation WNT canonique avec l’inhibiteur de la PORCN IWP2 se traduit par la spécification de CD43+ EryP-CFC et des progéniteurs myéloïdes, sans potentiel lymphoïdes détectable. Contraste, stimulation des canonique WNT signaling avec l’inhibiteur de la GSK3β, CHIR99021, au cours de la même étape de différenciation a provoqué l’absence totale de CD43 détectable+ EryP-CFC, tout en menant simultanément à la spécification du CD34+CD43− HE. Cette population possédait myéloïde, HBG-exprimant érythroïdes et lymphoïdes T potentiel. Les analyses subséquentes identifié ce qu’il manque l’expression CD7327,28 CD18428et son potentiel hématopoïétique était dépendante NOTCH28. En outre, unicellulaires analyses clonales ont démontré que ces lignées hématopoïétiques définitives pourraient provenir de cellules multipotentes28. Pris ensemble, ces études indiquent que stade WNT signaling manipulation permet de spécifier des progéniteurs hématopoïétiques primitives pures, ou multipotentes progéniteurs hématopoïétiques définitifs de NOTCH-dépendante.
Ici, nous exposons notre stratégie de différentiation qui génère des progéniteurs hématopoïétiques exclusivement primitifs ou définitifs, par manipulation de canonique WNT signalisation lors mésodermiques structuration et leur lignée hématopoïétique en aval des essais. Ce protocole est d’une grande utilité pour les chercheurs qui s’intéressent à la production de progéniteurs hématopoïétiques primitives ou définitifs de hPSCs pour les applications de la médecine régénérative.

<table>
	<tbody>
		<tr>
			<td>Iscove&#39;s Modified Dulbecco&#39;s Medium (IMD)</td>
			<td>Corning</td>
			<td>10-016</td>
			<td></td>
		</tr>
		<tr>
			<td>Fetal Bovine Serum (FBS), ES cell rated</td>
			<td>Gemini Bioproducts</td>
			<td>100-500</td>
			<td></td>
		</tr>
		<tr>
			<td>Fetal Bovine Serum (FBS)</td>
			<td>Hyclone</td>
			<td>SH30396.03</td>
			<td></td>
		</tr>
		<tr>
			<td>L-glutamine, 200 mM solution</td>
			<td>Life Technologies</td>
			<td>25030-081</td>
			<td></td>
		</tr>
		<tr>
			<td>Penicillin-streptomycin</td>
			<td>Life Technologies</td>
			<td>15070-063</td>
			<td></td>
		</tr>
		<tr>
			<td>0.25% Trypsin-EDTA</td>
			<td>Life Technologies</td>
			<td>25200056</td>
			<td></td>
		</tr>
		<tr>
			<td>0.05% Trypsin-EDTA</td>
			<td>Life Technologies</td>
			<td>25300054</td>
			<td></td>
		</tr>
		<tr>
			<td>Gelatin, porcine skin, Type A</td>
			<td>Sigma-Aldrich</td>
			<td>G1890</td>
			<td></td>
		</tr>
		<tr>
			<td>Alpha-MEM</td>
			<td>Life Technologies</td>
			<td>12000-022</td>
			<td></td>
		</tr>
		<tr>
			<td>DMEM-F12</td>
			<td>Corning</td>
			<td>10-092-CV</td>
			<td></td>
		</tr>
		<tr>
			<td>Knock-out serum replacement</td>
			<td>Life Technologies</td>
			<td>10828028</td>
			<td>&#34;KOSR&#34;</td>
		</tr>
		<tr>
			<td>Non-essential amino acids (NEAA)</td>
			<td>Life Technologies</td>
			<td>11140050</td>
			<td></td>
		</tr>
		<tr>
			<td>b-mercaptoethanol, 55 mM solution</td>
			<td>Life Technologies</td>
			<td>21985023</td>
			<td></td>
		</tr>
		<tr>
			<td>Hydrochloric acid</td>
			<td>Sigma-Aldrich</td>
			<td>H1758</td>
			<td></td>
		</tr>
		<tr>
			<td>Fraction V, Bovine Serum Albumin</td>
			<td>Fisher Scientific</td>
			<td>BP1605</td>
			<td></td>
		</tr>
		<tr>
			<td>Ham&#39;s F12</td>
			<td>Corning</td>
			<td>10-080</td>
			<td></td>
		</tr>
		<tr>
			<td>N2 supplement</td>
			<td>Life Technologies</td>
			<td>17502048</td>
			<td></td>
		</tr>
		<tr>
			<td>B27 supplement, no vitamin A</td>
			<td>Life Technologies</td>
			<td>12587010</td>
			<td></td>
		</tr>
		<tr>
			<td>Stempro-34 (SP34)</td>
			<td>Life Technologies</td>
			<td>10639011</td>
			<td>&#34;SP34&#34;</td>
		</tr>
		<tr>
			<td>Growth factor reduced Matrigel</td>
			<td>Corning</td>
			<td>354230</td>
			<td>&#34;MAT&#34;</td>
		</tr>
		<tr>
			<td>L-absorbic acid</td>
			<td>Sigma-Aldrich</td>
			<td>A4403</td>
			<td></td>
		</tr>
		<tr>
			<td>Human serum transferrin</td>
			<td>Sigma-Aldrich</td>
			<td>10652202001</td>
			<td></td>
		</tr>
		<tr>
			<td>Monothioglycerol (MTG)</td>
			<td>Sigma-Aldrich</td>
			<td>M6145</td>
			<td></td>
		</tr>
		<tr>
			<td>Collagenase B</td>
			<td>Roche</td>
			<td>11088831001</td>
			<td></td>
		</tr>
		<tr>
			<td>Collagenase II</td>
			<td>Life Technologies</td>
			<td>17101015</td>
			<td></td>
		</tr>
		<tr>
			<td>DNaseI</td>
			<td>Calbiochem</td>
			<td>260913</td>
			<td></td>
		</tr>
		<tr>
			<td>Phosphate Buffered Saline (PBS)</td>
			<td>Life Technologies</td>
			<td>14190144</td>
			<td></td>
		</tr>
		<tr>
			<td>bFGF</td>
			<td>R&#38;D Systems</td>
			<td>233-FB</td>
			<td></td>
		</tr>
		<tr>
			<td>BMP4</td>
			<td>R&#38;D Systems</td>
			<td>314-BP</td>
			<td></td>
		</tr>
		<tr>
			<td>Activin A</td>
			<td>R&#38;D Systems</td>
			<td>338-AC</td>
			<td></td>
		</tr>
		<tr>
			<td>VEGF</td>
			<td>R&#38;D Systems</td>
			<td>293-VE</td>
			<td></td>
		</tr>
		<tr>
			<td>SCF</td>
			<td>R&#38;D Systems</td>
			<td>255-SC</td>
			<td></td>
		</tr>
		<tr>
			<td>IGF-1</td>
			<td>R&#38;D Systems</td>
			<td>291-G1</td>
			<td></td>
		</tr>
		<tr>
			<td>IL-3</td>
			<td>R&#38;D Systems</td>
			<td>203-IL</td>
			<td></td>
		</tr>
		<tr>
			<td>IL-6</td>
			<td>R&#38;D Systems</td>
			<td>206-IL</td>
			<td></td>
		</tr>
		<tr>
			<td>IL-7</td>
			<td>R&#38;D Systems</td>
			<td>207-IL</td>
			<td></td>
		</tr>
		<tr>
			<td>IL-11</td>
			<td>R&#38;D Systems</td>
			<td>218-1L</td>
			<td></td>
		</tr>
		<tr>
			<td>TPO</td>
			<td>R&#38;D Systems</td>
			<td>288-TP</td>
			<td></td>
		</tr>
		<tr>
			<td>EPO</td>
			<td>Peprotech</td>
			<td>100-64</td>
			<td></td>
		</tr>
		<tr>
			<td>Flt-3 ligand (FLT3-L)</td>
			<td>R&#38;D Systems</td>
			<td>308-FK</td>
			<td></td>
		</tr>
		<tr>
			<td>CHIR99021</td>
			<td>Tocris</td>
			<td>4423</td>
			<td></td>
		</tr>
		<tr>
			<td>IWP2</td>
			<td>Tocris</td>
			<td>3533</td>
			<td></td>
		</tr>
		<tr>
			<td>Angiotensin II</td>
			<td>Sigma-Aldrich</td>
			<td>A9525</td>
			<td></td>
		</tr>
		<tr>
			<td>Losartan Potassium</td>
			<td>Tocris</td>
			<td>3798</td>
			<td></td>
		</tr>
		<tr>
			<td>CD4 PerCP Cy5.5 Clone RPA-T4</td>
			<td>BD Biosciences</td>
			<td>560650</td>
			<td>Dilution 1:100; T cell assay</td>
		</tr>
		<tr>
			<td>CD8 PE Clone RPA-T8</td>
			<td>BD Biosciences</td>
			<td>561950</td>
			<td>Dilution 1:10; T cell assay</td>
		</tr>
		<tr>
			<td>CD34 APC Clone 8G12</td>
			<td>BD Biosciences</td>
			<td>340441</td>
			<td>Dilution 1:100; EHT assay</td>
		</tr>
		<tr>
			<td>CD34 PE-Cy7 Clone 8G12</td>
			<td>BD Biosciences</td>
			<td>348801</td>
			<td>Dilution 1:100; Hemogenic endothelium</td>
		</tr>
		<tr>
			<td>CD43 FITC Clone 1G10</td>
			<td>BD Biosciences</td>
			<td>555475</td>
			<td>Dilution 1:10; Hemogenic endothelium</td>
		</tr>
		<tr>
			<td>CD45 APC-Cy7 Clone 2D1</td>
			<td>BD Biosciences</td>
			<td>557833</td>
			<td>Dilution 1:50; T cell assay</td>
		</tr>
		<tr>
			<td>CD45 eFluor450 Clone 2D1</td>
			<td>BD Biosciences</td>
			<td>642284</td>
			<td>Dilution 1:50; EHT assay</td>
		</tr>
		<tr>
			<td>CD56 APC Clone B159</td>
			<td>BD Biosciences</td>
			<td>555518</td>
			<td>Dilution 1:20; T cell assay</td>
		</tr>
		<tr>
			<td>CD73 PE Clone AD2</td>
			<td>BD Biosciences</td>
			<td>550257</td>
			<td>Dilution 1:50; Hemogenic endothelium</td>
		</tr>
		<tr>
			<td>CD184 APC Clone 12G5</td>
			<td>BD Biosciences</td>
			<td>555976</td>
			<td>Dilution 1:50; Hemogenic endothelium</td>
		</tr>
		<tr>
			<td>4&#39;,6-diamidino-2-phenylindole (DAPI)</td>
			<td>BD Biosciences</td>
			<td>564907</td>
			<td>Dilution 1:10,000; T cell assay</td>
		</tr>
		<tr>
			<td>OP9 DL4 cells</td>
			<td></td>
			<td></td>
			<td>Holmes, R. and J.C. Zuniga-Pflucker. Cold Spring Harb Protoc, 2009. 2009(2): p. pdb prot5156</td>
		</tr>
		<tr>
			<td>MethoCult H4034</td>
			<td>Stemcell Technologies</td>
			<td>4034</td>
			<td>&#34;MeC&#34;</td>
		</tr>
		<tr>
			<td>Milli-Q water purification system</td>
			<td>EMD Millipore</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>5% CO2 incubator</td>
			<td></td>
			<td></td>
			<td>Set at 37 C</td>
		</tr>
		<tr>
			<td>Multigas incubator</td>
			<td></td>
			<td></td>
			<td>Set at 37 C, 5% CO2, 5% O2</td>
		</tr>
		<tr>
			<td>6 well tissue culture plate</td>
			<td>Corning</td>
			<td>353046</td>
			<td></td>
		</tr>
		<tr>
			<td>24 well tissue culture plate</td>
			<td>Corning</td>
			<td>353226</td>
			<td></td>
		</tr>
		<tr>
			<td>6 well low-adherence tissue culture plate</td>
			<td>Corning</td>
			<td>3471</td>
			<td></td>
		</tr>
		<tr>
			<td>24 well low-adherence tissue culture plate</td>
			<td>Corning</td>
			<td>3473</td>
			<td></td>
		</tr>
		<tr>
			<td>35 mm tissue culture dishes</td>
			<td>Corning</td>
			<td>353001</td>
			<td></td>
		</tr>
		<tr>
			<td>Blunt-end needle, 16 gauge</td>
			<td>Corning</td>
			<td>305198</td>
			<td></td>
		</tr>
		<tr>
			<td>3 cc syringes</td>
			<td>Corning</td>
			<td>309657</td>
			<td></td>
		</tr>
		<tr>
			<td>5 mL polypropylene test tube</td>
			<td>Corning</td>
			<td>352063</td>
			<td></td>
		</tr>
		<tr>
			<td>5 mL polystyrene test tube</td>
			<td>Corning</td>
			<td>352058</td>
			<td></td>
		</tr>
		<tr>
			<td>15 mL polypropylene conical</td>
			<td>Corning</td>
			<td>430791</td>
			<td></td>
		</tr>
		<tr>
			<td>50 mL polypropylene conical</td>
			<td>Corning</td>
			<td>430921</td>
			<td></td>
		</tr>
		<tr>
			<td>2 mL serological pipette</td>
			<td>Corning</td>
			<td>357507</td>
			<td></td>
		</tr>
		<tr>
			<td>5 mL serological pipette</td>
			<td>Corning</td>
			<td>4487</td>
			<td></td>
		</tr>
		<tr>
			<td>10 mL serological pipette</td>
			<td>Corning</td>
			<td>4488</td>
			<td></td>
		</tr>
		<tr>
			<td>25 mL serological pipette</td>
			<td>Corning</td>
			<td>4489</td>
			<td></td>
		</tr>
		<tr>
			<td>Cell scrapers</td>
			<td>Corning</td>
			<td>353085</td>
			<td></td>
		</tr>
		<tr>
			<td>2.0 mL cryovials</td>
			<td>Corning</td>
			<td>430488</td>
			<td></td>
		</tr>
		<tr>
			<td>5 mL test tube with 40 &#181;M cell strainer</td>
			<td>Corning</td>
			<td>352235</td>
			<td></td>
		</tr>
		<tr>
			<td>40 &#181;M cell strainer</td>
			<td>Corning</td>
			<td>352340</td>
			<td></td>
		</tr>
		<tr>
			<td>Cell culture centrifuge</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Biosafety hood</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>FACS AriaII or equivalent</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>LSRii or equivalent</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>FlowJo software</td>
			<td>TreeStar</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Water bath</td>
			<td></td>
			<td></td>
			<td>Set at 37 C</td>
		</tr>
		<tr>
			<td>0.22 &#181;M filtration system</td>
			<td>Corning</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Autoclave</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>4 C refrigerator</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>-20 C Freezer</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>-80 C Freezer</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
	</tbody>
</table>

directed differentiation of primitive and definitive hematopoietic progenitors from human pluripotent stem cells

Un des objectifs majeurs pour la médecine régénérative est la production et la maintenance de cellules souches hématopoïétiques (CSH) dérivé des cellules souches pluripotentes humaines (hPSCs). Jusqu'à une date récente, efforts pour hPSCs se différencient en CSH ont généré principalement des progéniteurs hématopoïétiques qui manquent potentiel d’HSC et plutôt ressembler à l’hématopoïèse sac vitellin. Ces progéniteurs hématopoïétiques qui en résulte peuvent ont une utilité pour in vitro de modélisation maladie de divers troubles hématopoïétiques adultes, particulièrement ceux des lignées lymphoïdes limitée. Cependant, nous avons récemment décrit des méthodes pour générer l’érythro-myélo-lymphoïdes multilignées progéniteurs hématopoïétiques définitifs de hPSCs à l’aide d’un protocole spécifique au stade de différenciation dirigée, qui nous exposons ici. Par le biais de dissociation enzymatique du hPSCs sur la membrane basale enduit de matrice ustensiles en plastique, corps embryoïdes (EBs) sont forment. EBs sont différenciés au mésoderme par BMP4 recombinant, qui est spécifié par la suite au programme hématopoïétique définitif par l’inhibiteur de la GSK3β, CHIR99021. Alternativement, l’hématopoïèse primitif est spécifiée par l’inhibiteur de la PORCN, IWP2. Hématopoïèse est plus entraîné par l’addition de recombinant VEGF et soutien hématopoïétique cytokines. Les progéniteurs hématopoïétiques résultants générés à l’aide de cette méthode ont le potentiel d’être utilisé pour la modélisation du développement, in vitroet de maladie.

Un schéma illustrant l’induction des progéniteurs hématopoïétiques primitives et définitives de hPSCs est illustré à la Figure 1. Mésoderme structuration par canonique WNT signaling se produit pendant les jours 2 et 3 de la différenciation, suivie de la spécification des cellules souches hématopoïétiques.
Représentatif de cytométrie et formant les dosages de méthylcellulose de cul...

Watch this Scientific Journal Video about Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells at JoVE.com

Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells

Nous présentons ici pluripotentes humaines protocoles de culture de cellules souches (hPSC), utilisés pour différencier les hPSCs en CD34+ progéniteurs hématopoïétiques. Cette méthode utilise la manipulation spécifique au stade de canonique WNT de signalisation indiquer les cellules exclusivement pour le programme hématopoïétique de définitif ou primitif.

Réalisé la différenciation des progéniteurs hématopoïétiques primitives et définitif des cellules souches pluripotentes humaines

One of the major goals for regenerative medicine is the generation and maintenance of hematopoietic stem cells (HSCs) derived from human pluripotent stem ...

The overall goal of this method is to direct the Differentiation of Human Pluripotent Stem Cells toward the Primitive or Definitive Hematopoietic Program using a stage specific signal manipulation approach. This method can address many key questions in the field, such as understanding the signal and transcriptional regulators of human definitive hematopoiesis. The main advantage of this technique is that it uses stage specific manipulation instantly.Demonstrating this procedure is Carissa Dege, a post doc in my laboratory. To begin the protocol, obtain previously prepared Human Pluripotent Stem Cell Lines or HPSCs grown on mouse embryonic fiberblasts or MEFs to 70%to 80%confluency in a 37-degree Celsius incubator with five percent CO2. Aspirate the HPSC media and add one milliliter of 37-degree Celsius 0.25%Trypsin EDTA to each well for one minute.After one minute, aspirate the Trypsin and add one milliliter of stock media to each well. Using a cell scraper, scrape the cells off the plate. Then, add one milliliter of wash buffer to each well.With a two-milliliter serological pipette, triturate the cells three to five times to break up large clumps. And transfer the cells to a 50-milliliter conical tube. Centrifuge the HPSCs at 330 x G for five minutes.After the spin, add HPSC media and re-suspend the cells. Next, add two milliliters of re-suspended HPSCs to each well of the MAT-coded plasticware and incubate the cells overnight. After 24 hours, aspirate the media and replace it with 37-degree Celsius 0.05%Trypsin EDTA for one minute.Aspirate the Trypsin EDTA. Add one milliliter stock media and scrape the cells vigorously with a cell scraper. Then add one milliliter of wash media.With a two-milliliter serological pipette, triturate the cells three times and transfer them to a 50-milliliter conical tube. Centrifuge the cells at 220 x G for five minutes. Then aspirate the media, add 20 milliliters of wash media and use a five milliliter serological pipette to gently re-suspend the cells.After centrifugation and aspiration, carefully re-suspend the Embryoid Bodies or EBs in Day Zero media. Dispense two milliliters of differentiation media containing EBs into each well of a six-well low-adherence cell culture dish using a ten-milliliter serological pipette. Place the EBs into a 37-degree Celsius five percent CO2, five percent O2 multigas incubator.Twenty four hours later, add two milliliters Day One media. Incubate the cells overnight in a multigas incubator. After 18 hours, gently harvest the EBs with a five-milliliter serological pipette and spin them at 100 x G for five minutes.Wash and combine the entire culture with ten milliliters of Iscove's Modified Dulbecco Medium or IMDM. After spinning the culture again at 100 X G for five minutes to remove debris, aspirate the media. Gently re-suspend the EBs with Day Two Media using a P1000 pipette.Then dispense two milliliters of the EBs per well into six-well low-adherence cell culture plates. Add three micromolar CHIR99021 or IWP2 to specify definitive or primitive hematopoetic progenitors respectively. Incubate the plate in a 37-degree Celsius multigas incubator for 30 hours.After 30 hours, isolate the EBs with a two-milliliter serological pipette by transferring them to a 50-milliliter conical tube and centifuging them at 330 x G for five minutes. Gently re-suspend the EBs and wash them with 10 milliliters of IMDM. Re-suspend the EBs in Day Three Media and dispense two milliliters into each well of low-adherence six-well plates.Incubate the cells in a 37-degree Celsius multigas incubator for 72 hours. After 72 hours of incubation, add two milliliters of Day Six Media to each well. Then incubate the EBs in a 37-degree Celsius multigas incubator for an additional 48 hours.Isolate the CHIR99021-treated EBs on day eight of differentiation and proceed to the next section. Centrifuge the EBs at 330 x G for five minutes. Aspirate the supernatant.Next add two milliliters of 0.25%Trypsin EDTA to the EBs. Vortex the EBs for five seconds and incubate the Ebs in a 37-degree Celsius water bath for eight minutes. Then add five milliliters of stop solution and centrifuge the EBs.Then aspirate the supernatant. Re-suspend the EBs in five milliliters of Collagenase II.Vortex the tube for five seconds and then incubate the EBs in a 37-degree Celsius water bath. After 60 minutes, vortex the EBs for five seconds and add five milliliters of stop solution.After centrifugation, aspirate the supernatant and re-suspend the cells in one milliliter of FACS buffer. Pass the cells thru a 40-micron cell strainer to remove undissociated cell clumps. Proceed with antibody labelling and FACS isolation of CD34-positive hemogenic endothelial progenitors.Following FACS isolation, resuspend the cells in HE media. Distribute the cells in 50-microliter aliquots in a 96-well low-adherence culture plate and then incubate the cells overnight. The next morning, the hematopoietic progenitors should aggregate into clumps of six to ten cells.Gently transfer the 50-miroliter volumes of re-aggregated cells into the center of a 24-well MAT-coded plate. Gently place the plate in the multigas incubator for four to six hours until the cells are attached. After four to six hours, to allow for cells to attach, slowly add one milliliter of freshly prepared HE media to each well.Incubate the cells in the multigas incubator until the hematopoetic cells are visible. Next harvest the definitive hematopoetic progenitors by gently removing the HE media from the cells and passing through a 40-micron cell strainer to collect flow-through. For the remaining adherent cells, add 0.5 milliliters 0.25%Trypsin EDTA to the cells and incubate them in a 37-degree Celsius incubator for five minutes.After Trypsinization, add 0.5 milliliters of stop solution to each well. Pass the cells through the same 40-micron cell strainer to pool all adherent and non-adherent cells together and spin the cells. Add 2, 000 to 10, 000 FACS isolated cells to one well of the OP9 DL4 cells in OP9 media.Incubate in a 37-degree Celsius, 5%CO2 incubator. To passage the cells every four to five days, triturate the cells with a one-milliliter pipette. Pass through a 40-micron filter to remove clumps.After centrifugation, aspirate the media. Re-suspend the cells in two milliliters of fresh T-cell media and place them on fresh OP9 DL4 cells. After at least 21 days of cold culture, triturate the cells vigorously and pass through a 40-micron filter to remove cell debris.Centrifuge at 330 x G for five minutes and aspirate the supernatant and then continue with standard flow cytometry. Flow cytometry shows that IWP2-treated differentiation cultures, yield a distinct CD34 positive, CD43 negative and CD34 low CD43 positive population. While CHIR-treated differentiation cultures have less than 1%CD43 positive cells on day eight of differentiation.Primitive hematopoietic progenitors derived under IWP2 conditions isolated on day nine will give rise to predominantly primitive erythroid and myeloid progenitors in the methylcellulose assays. The CD34 positive CD43 negative population derived from the CHIR99021 treatment is a heterogeneous population containing endothelial progenitors as well as CD34 positive, CD43 negative, CD73 negative, CD184 negative hemogenic endothelium, which when isolated by FACS will initially form a monolayer of endothelial-like cells that then undergoes an endothelial to hematopoietic transition resulting in round, refractile, non-adherent hematopoietic cells. These hematopoietic cells can be assessed by flow cytometry for the expression of CD34 and CD45.Hematopoietic progenitors isolated from the EHT assays can be used in methylcellulose assays and give rise to large, burst-like, erythroid colony forming units, small erythroid colony forming units and myeloid progenitors. These representative flow cytometric analyses of the T-lymphocyte assays potential from CHIR99021-derived CD34 positive, CD43 negative, CD73 negative, CD184 negative hematopoietic progenitors and IWP2-derived CD34 positive, CD43 negative hematopoietic progenitors show the presence of a CD45 positive, CD56 negative, CD4 positive, CD8 positive population in CHIR-derived progenitors indicative of the hematopoietic potential within the input CD34 positive population. After watching this video, you should have good understanding of how to differentiate human pluripotent stem cells towards primitive or definitive amount of hematopoietic progenitors.

Research

JoVE Journal

Developmental Biology

Large-Scale Production of Cardiomyocytes from Human Pluripotent Stem Cells Using a Highly Reproducible Small Molecule-Based Differentiation Protocol

Production à grande échelle de cardiomyocytes à partir pluripotentes humaines cellules souches en utilisant un petit protocole Différenciation Molecule-Based hautement reproductible

Maximizing the benefit of human pluripotent stem cells (hPSCs) for research, disease modeling, pharmaceutical and clinical applications requires robust ...

Recherche

Biologie du développement

Efficient Differentiation of Pluripotent Stem Cells to NKX6-1+ Pancreatic Progenitors

Efficient Differentiation of Pluripotent Stem Cells to NKX6-1+ Pancreatic Progenitors

Différenciation efficace de pluripotentes cellules souches à NKX6-1<sup&gt; +</sup&gt; pancréatiques progéniteurs

Pluripotent stem cells have the ability to self renew and differentiate to multiple lineages, making them an attractive source for the generation of ...

In Vitro Differentiation of Human Pluripotent Stem Cells into Trophoblastic Cells

In Vitro Differentiation of Human Pluripotent Stem Cells into Trophoblastic Cells

In Vitro Différenciation des cellules souches pluripotentes humaines en cellules trophoblastiques

The placenta is the first organ to develop during embryogenesis and is required for the survival of the developing embryo. The placenta is comprised of ...

Rapid, Directed Differentiation of Retinal Pigment Epithelial Cells from Human Embryonic or Induced Pluripotent Stem Cells

Rapide, réalisée la différenciation des cellules épithéliales pigmentaire rétinien de cellules souches pluripotentes humaines embryonnaires ou induit

We describe a robust method to direct the differentiation of pluripotent stem cells into retinal pigment epithelial cells (RPE). The purpose of providing ...

Generation of First Heart Field-like Cardiac Progenitors and Ventricular-like Cardiomyocytes from Human Pluripotent Stem Cells

Génération du premier cœur comme champ progéniteurs cardiaques et Cardiomyocytes ventriculaires-comme des cellules souches pluripotentes humaines

The generation of large amounts of functional human pluripotent stem cells-derived cardiac progenitors and cardiomyocytes of defined heart field origin is ...

Efficient and Scalable Directed Differentiation of Clinically Compatible Corneal Limbal Epithelial Stem Cells from Human Pluripotent Stem Cells

Efficace et évolutive différenciation dirigée de cliniquement compatibles cornéenne limbique épithéliales cellules souches à partir des cellules souches pluripotentes humaines

Corneal limbal epithelial stem cells (LESCs) are responsible for continuously renewing the corneal epithelium, and thus maintaining corneal homeostasis ...

Efficient Differentiation of Human Pluripotent Stem Cells into Liver Cells

Différenciation efficace des cellules souches pluripotentes humaines en cellules hépatiques

The liver detoxifies harmful substances, secretes vital proteins, and executes key metabolic activities, thus sustaining life. Consequently, liver ...

In Vitro Generation of Somite Derivatives from Human Induced Pluripotent Stem Cells

Dans Vitro génération du Somite dérivés de Human induit Pluripotent Stem cellules

In response to signals such as WNTs, bone morphogenetic proteins (BMPs), and sonic hedgehog (SHH) secreted from surrounding tissues, somites (SMs) give ...

Hemogenic Endothelium Differentiation from Human Pluripotent Stem Cells in A Feeder- and Xeno-free Defined Condition

Différenciation hémogénique de l'endothélium par des cellules souches pluripotentes humaines dans une condition définie sans mangeoire et sans xéno

Deriving functional hematopoietic stem and progenitor cells (HSPCs) from human pluripotent stem cells (PSCs) have been an elusive goal for autologous ...

Transient Treatment of Human Pluripotent Stem Cells with DMSO to Promote Differentiation

Traitement transitoire des cellules souches pluripotentes humaines avec DMSO pour promouvoir la différenciation

Despite the growing use of pluripotent stem cells (PSCs), challenges in efficiently differentiating embryonic and induced pluripotent stem cells (ESCs and ...